JP3422815B2 - Liquid filling valve - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a back pressure type liquid filling valve.

[0002]

2. Description of the Related Art In a back pressure type liquid filling valve, a vent tube having a float valve is moved up and down by a rack and pinion mechanism and the amount of its content can be adjusted even during filling work, as disclosed in Japanese Patent Publication No. 62-54717. Known to be.

[0003]

However, in the above-mentioned conventional method, the raising / lowering action of the vent tube is performed by a mechanism different from the opening / closing operation of the flow valve for opening / closing the filling valve, and the content adjusting means of the vent tube is also screwed. Since this method is used, there is a problem that it cannot be done quickly and easily, and the opening of the flow valve cannot be adjusted. In view of these circumstances, the present invention aims to simplify the configuration by linking the raising / lowering operation of the vent tube and the opening / closing operation of the flow valve with the same drive device, and at the same time, adjusting the amount of flavor by the vent tube and opening the flow valve. It is an object of the present invention to provide a liquid filling valve capable of easily adjusting the degree.

[0004]

In order to achieve the above object, the present invention provides a filling valve at the lower end on the outside of the lower half of a vent tube provided at the center of the filling valve body and having a float valve at the lower end. A valve stem provided with a flow valve that opens and closes is fitted so as to be able to move up and down, and a spring that urges the flow valve upward is fitted between a locking member fixed to the upper end of the valve stem and the upper end of the filling valve. A spring for urging the vent tube upward is provided between a holding member provided on the upper end of the vent tube and the locking member, and a pusher operated by a control cylinder for lowering the holding member is provided above the holding member. In addition, a spacer for adjusting the flow valve opening is detachably provided between the locking member and the upper end of the spring for urging the flow valve. By providing the vent tube lowering adjusting spacer detachably on top of both holding members, it is capable to easily adjust the descent amount of opening degree and the vent tube of the flow valve.

[0005]

According to the present invention, when the pusher pushes the holding member via the spacer for adjusting the vent tube by the operation of the control cylinder of the drive device, the lower end of the vent tube resists the biasing spring of the vent tube and the lower end of the filling valve body. After projecting downward from the valve, the locking member further presses the valve stem downward against the flow valve biasing spring to open the flow valve and fill the container with the filling liquid. The descending amount and the opening amount of the flow valve are adjusted by replacing the vent tube descending adjusting spacer and the flow valve opening adjusting spacer with those having different lengths.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.
The filling valve body 1 includes a valve base body 3 supported by a rotating turntable 2, a sliding cylinder 4 which is vertically attached to a lower portion of the valve base body 3 by an elevating mechanism 4'and has a lower end abutting a peripheral edge of a container, and a valve. A vent tube 5 arranged at the center of the base 3 and extending upward, and a valve stem 7 fitted to the outside of the lower half of the vent tube 5 and provided with a flow valve 6 at the lower end.
And is formed so that the liquid supplied from the liquid introduction hole 8 provided in the upper part of the valve base 3 is filled into the container by opening and closing the flow valve 6 through the flow passage 9 of the valve base 3. .

A float valve 10 is provided at the lower end of the vent tube 5, and a holding member 11 is provided at the upper end thereof, and a locking member 12 fixed to the upper portion of the valve stem 7 is fitted in the middle portion. A vent tube 5 is provided between the holding member 11 and the locking member 12 via an intermediate sleeve 13.
The springs 14 and 14 'for biasing the
Further, a vent tube lowering adjustment spacer 15 is detachably fitted to the upper portion of the holding member 11, and a pusher 17 operated by a control cylinder 16 is provided above the vent tube lowering adjustment spacer 15. .

Further, a support sleeve 19 having a flow valve opening adjusting spacer 18 which can be attached / detached by a split groove 18 'is fitted to the valve stem 7 below the engaging member 12, and an upper end flange portion 19 of the sleeve 19 is fitted. ′ And the upper end of the valve base 3 are fitted with a spring 20 for urging the flow valve 6 upward, and a valve opening gap a is formed between the lower end of the support sleeve 19 and the valve base 3. The urging force of is stronger than that of the springs 14 and 14 '.

Since the embodiment of the present invention is configured as described above, the control is performed after the sliding cylinder 4 descends by the elevating mechanism 4'and contacts the upper edge of the container as in this kind of reverse pressure filling machine. When the cylinder 16 pushes the holding member 11 through the pusher 17 through the vent tube lowering adjustment spacer 15 for a certain stroke, the vent tube 5 causes the springs 14 and 14 '.
Against that, the intermediate sleeve 13 descends until it comes into contact with the locking member 12 and projects into the container, and subsequently presses the locking member 12 to press the valve stem 7 against the spring 20 and support it. Since the sleeve 19 descends the valve opening gap a until it abuts the valve base body 3, the flow valve 6 is opened.
The liquid of the filling valve substrate 3 is filled into the container through the flow passage 9.

In this way, when the liquid is filled in the container and the liquid level rises to reach the liquid level, the float valve 10 of the vent tube 5 is closed and the control cylinder 16 moves the pusher 17 upward to vent. The tube 5 is urged and raised by the springs 14 and 14 ', and at the same time, the valve stem 7 is also urged upward by the spring 20 to close the flow valve 6 and the filling process is completed. As in the conventional method, the process of exhausting and pressurizing the inside of the container is performed in conjunction with the operation of the valve 6.

However, in the case of adjusting the amount of intake by changing the amount of downward protrusion of the vent tube 5, the holding member 11 is used.
When the upper vent tube lowering adjustment spacer 15 is replaced with a different height, and when the opening degree of the flow valve is adjusted, the flow valve opening adjusting spacer 18 is used by using the split groove 18 '. Adjustable by attaching / detaching and replacing with different lengths.

[0012]

According to the present invention, in the reverse pressure type liquid filling machine of this type, the raising and lowering of the vent tube having the float valve and the opening and closing of the flow valve for filling the liquid are performed by the same control cylinder. However, it can be remarkably simplified as compared with the conventional one in which different mechanisms are used, and the operation and adjustment of both can be facilitated . Especially the flow valve
Opened by the pressing action of the linder and urges the flow valve upward
Filling this by closing with the spring force
It can be installed at the lower end of the valve body, further simplifying the structure and
It is possible to prevent filling and improve filling accuracy and perform hygienic filling.
As well as the float valve can be housed in the filling valve body
Supply the container below the filling valve and discharge it from now on.
The operation can be done smoothly without any hindrance.

Further, according to the present invention, the amount of elevation of the vent tube and the opening of the flow valve can be adjusted quickly and easily by simply attaching and detaching the respective adjusting spacers, and the adjusting work can be carried out easily and efficiently.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of the present invention.

FIG. 2 is a vertical sectional front view of the main part.

FIG. 3 is a perspective view of a spacer for adjusting the opening of the flow valve.

[Explanation of symbols]

1 Filling valve body 5 vent tube 6 flow valve 7Valve stem 10 float valve 11 Holding member 12 Locking member 13 Intermediate sleeve 14.14 'spring 15 Vent tube descending adjustment spacer 16 control cylinder 17 Pusher 18 Flow valve opening adjustment spacer 18 'split groove 19 Support sleeve 20 spring

Claims (2)

(57) [Claims] 1. A in the lower half of the outer vent tube having a float valve and a lower end provided at the center portion of the filling valve body, bar provided with Furobaru for opening and closing the filling valve at the lower end
The valve stem is fitted so that it can move up and down, and a spring that urges the flow valve upward is fitted between the locking member fixed to the upper end of the valve stem and the upper end of the filling valve, and the holding provided on the upper end of the vent tube. A liquid filling valve characterized in that a spring for urging the vent tube upward is provided between the member and the locking member, and a pusher operated by a control cylinder for lowering the holding member is provided above the holding member. . 2. A flow valve opening adjusting spacer is detachably provided between the locking member and an upper end of a spring for urging the flow valve, and a vent tube lowering adjusting spacer is detachably provided on an upper portion of the holding member. The liquid filling valve according to claim 1.